C# 创建PDF文档

下面的示例将介绍如何在C#中创建PDF文档,

工具/原料

  • Free Spire.PDF for .NET
  • VS2013(版本可自选)

方法/步骤

  1. 下载安装该类库(安装完成后,注意在项目中引用Spire.Pdf.dll,dll可以在安装路径下的Bin文件夹中获取。

  2. C#

    using Spire.Pdf;

    using Spire.Pdf.Graphics;

    using System.Drawing;

     

    namespace CreatePDF_PDF

    {

        class Program

        {

            static void Main(string[] args)

            {

                //初始化一个PdfDocument类实例

                PdfDocument document = new PdfDocument();

     

                //声明 PdfUnitConvertor和PdfMargins类对象

                PdfUnitConvertor unitCvtr = new PdfUnitConvertor();

                PdfMargins margins = new PdfMargins();

     

                //设置页边距

                margins.Top = unitCvtr.ConvertUnits(2.54f, PdfGraphicsUnit.Centimeter, PdfGraphicsUnit.Point);

                margins.Bottom = margins.Top;

                margins.Left = unitCvtr.ConvertUnits(3.17f, PdfGraphicsUnit.Centimeter, PdfGraphicsUnit.Point);

                margins.Right = margins.Left;

     

                //新添加一个A4大小的页面

                PdfPageBase page = document.Pages.Add(PdfPageSize.A4, margins);

     

                //自定义PdfTrueTypeFont、PdfPen实例,设置字体类型、字号和字体颜色

                PdfTrueTypeFont font = new PdfTrueTypeFont(new Font("楷体", 11f),true);

                PdfPen pen = new PdfPen(Color.Black);

     

                //调用DrawString()方法在指定位置写入文本

                string text = ("《蝶恋花 送春》 \n 楼外垂杨千万缕,欲系青春,少住春还去。犹自风前飘柳絮,随春且看归何处?\n 绿满山川闻杜宇,便作无情,莫也愁人苦。把酒送春春不语,黄昏却下潇潇雨。");

                page.Canvas.DrawString(text, font, pen, 15, 13);

     

                //加载图片,并调用DrawImage()方法在指定位置绘入图片

                PdfImage image = PdfImage.FromFile("image1.jpg");

                float width = image.Width * 0.55f;

                float height = image.Height * 0.55f;

                float y = (page.Canvas.ClientSize.Width - width) / 3;

                page.Canvas.DrawImage(image, y, 60, width, height);

     

                //保存并打开文档

                document.SaveToFile("PDF创建.pdf");

                System.Diagnostics.Process.Start("PDF创建.pdf");

            }

        }

    }

  3. 创建结果:

    C# 创建PDF文档
    END

注意事项

  • 在这个示例中使用到的控件Spire.Pdf.dll支持除了常规的英文之外,也支持直接创建中文的文档。
C#实现生成PDF文档(附源码) 收藏 //write by wenhui.org using System; using System.IO; using System.Text; using System.Collections; namespace PDFGenerator { public class PDFGenerator { static float pageWidth = 594.0f; static float pageDepth = 828.0f; static float pageMargin = 30.0f; static float fontSize = 20.0f; static float leadSize = 10.0f; static StreamWriter pPDF=new StreamWriter("E:\myPDF.pdf"); static MemoryStream mPDF= new MemoryStream(); static void ConvertToByteAndAddtoStream(string strMsg) { Byte[] buffer=null; buffer=ASCIIEncoding.ASCII.GetBytes(strMsg); mPDF.Write(buffer,0,buffer.Length); buffer=null; } static string xRefFormatting(long xValue) { string strMsg =xValue.ToString(); int iLen=strMsg.Length; if (iLen<10) { StringBuilder s=new StringBuilder(); int i=10-iLen; s.Append('0',i); strMsg=s.ToString() + strMsg; } return strMsg; } static void Main(string[] args) { ArrayList xRefs=new ArrayList(); //Byte[] buffer=null; float yPos =0f; long streamStart=0; long streamEnd=0; long streamLen =0; string strPDFMessage=null; //PDF文档头信息 strPDFMessage="%PDF-1.1 "; ConvertToByteAndAddtoStream(strPDFMessage); xRefs.Add(mPDF.Length); strPDFMessage="1 0 obj "; ConvertToByteAndAddtoStream(strPDFMessage); strPDFMessage="<> "; ConvertToByteAndAddtoStream(strPDFMessage); strPDFMessage="stream "; ConvertToByteAndAddtoStream(strPDFMessage); ////////PDF文档描述 streamStart=mPDF.Length; //字体 strPDFMessage="BT /F0 " + fontSize +" Tf "; ConvertToByteAndAddtoStream(strPDFMessage); //PDF文档实体高度 yPos = pageDepth - pageMargin; strPDFMessage=pageMargin + " " + yPos +" Td " ; ConvertToByteAndAddtoStream(strPDFMessage); strPDFMessage= leadSize+" TL " ; ConvertToByteAndAddtoStream(strPDFMessage); //实体内容 strPDFMessage= "(http://www.wenhui.org)Tj " ; ConvertToByteAndAddtoStream(strPDFMessage); strPDFMessage= "ET "; ConvertToByteAndAddtoStream(strPDFMessage); streamEnd=mPDF.Length; streamLen=streamEnd-streamStart; strPDFMessage= "endstream endobj "; ConvertToByteAndAddtoStream(strPDFMessage); //PDF文档的版本信息 xRefs.Add(mPDF.Length); strPDFMessage="2 0 obj "+ streamLen + " endobj "; ConvertToByteAndAddtoStream(strPDFMessage); xRefs.Add(mPDF.Length); strPDFMessage="3 0 obj <> endobj "; ConvertToByteAndAddtoStream(strPDFMessage); xRefs.Add(mPDF.Length); strPDFMessage="4 0 obj <</Type /Pages /Count 1 "; ConvertToByteAndAddtoStream(strPDFMessage); strPDFMessage="/Kids[ 3 0 R ] "; ConvertToByteAndAddtoStream(strPDFMessage); strPDFMessage="/Resources<</ProcSet[/PDF/Text]/Font<> >> "; ConvertToByteAndAddtoStream(strPDFMessage); strPDFMessage="/MediaBox [ 0 0 "+ pageWidth + " " + pageDepth + " ] >> endobj "; ConvertToByteAndAddtoStream(strPDFMessage); xRefs.Add(mPDF.Length); strPDFMessage="5 0 obj <> endobj "; ConvertToByteAndAddtoStream(strPDFMessage); xRefs.Add(mPDF.Length); strPDFMessage="6 0 obj <> endobj "; ConvertToByteAndAddtoStream(strPDFMessage); streamStart=mPDF.Length; strPDFMessage="xref 0 7 0000000000 65535 f "; for(int i=0;i<xRefs.Count;i++) { strPDFMessage+=xRefFormatting((long) xRefs[i])+" 00000 n "; } ConvertToByteAndAddtoStream(strPDFMessage); strPDFMessage="trailer <> "; ConvertToByteAndAddtoStream(strPDFMessage); strPDFMessage="startxref " + streamStart+" %%EOF "; ConvertToByteAndAddtoStream(strPDFMessage); mPDF.WriteTo(pPDF.BaseStream); mPDF.Close(); pPDF.Close(); } } }
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